Native app development tool chains only permit static linking of libraries. What this means is that there is no straightforward way to dynamically load library components into your app, the way that a web developer may choose to pull different JavaScript modules over the web on the fly.
In the case of iOS, there are a few tricks through which libraries can be loaded. The default iOS Xcode settings don't permit you to create a dynamic library, but that can be worked around by copying over the MacOS settings. However, while this can be tested out locally, roadblocks appear during code signing, and the kernel kills app libraries that are not signed by Apple with the same certificate. That said, since the app review process bars dynamic loading, it's unlikely to make it through their checklist.
Workarounds such as this-or others that...